Valid share drop by 50%?

[sub]

Why did my valid shares drop 50% on September 21??
It looks lke this on all my miners.

Thx,
Sub

[sub]

anyone???

[sub]

Has no one else seen this kind of drop on ETH?

[ramses]

They changed pool difficulty. This will not affect your income.

[sub]

Ahh thank you! I had just not ever seen anything like this… only been mining for about a year now.